1.3 problem 3

Internal problem ID [3000]

Book: Applied Differential equations, N Curle, 1971
Section: Examples, page 35
Problem number: 3.
ODE order: 1.
ODE degree: 3.

CAS Maple gives this as type [[_homogeneous, `class C`], _dAlembert]

\[ \boxed {y-{y^{\prime }}^{2} \left (1-\frac {2 y^{\prime }}{3}\right )=x} \]

Solution by Maple

Time used: 0.047 (sec). Leaf size: 49

dsolve(y(x)-x=(diff(y(x),x))^2*(1-2/3* diff(y(x),x)),y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= x +\frac {1}{3} \\ y \left (x \right ) &= \frac {\left (2 x -2 c_{1} \right ) \sqrt {c_{1} -x}}{3}+c_{1} \\ y \left (x \right ) &= \frac {\left (-2 x +2 c_{1} \right ) \sqrt {c_{1} -x}}{3}+c_{1} \\ \end{align*}

Solution by Mathematica

Time used: 0.0 (sec). Leaf size: 0

DSolve[y[x]-x==y'[x]^2*(1-2/3* y'[x]),y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

Timed out